Question on Fuel Pressure Regulator

[Chicken Patty]

Hello everyone,

I got the fuel lab FPR kit for my 2g DSM. I was wondering if I was to install it with the stock injectors, if I can try to up the fuel pressure just a tad to hopefully get away with a bit more boost. Only thing is I don't have a data logger at the moment to see my injector duty cycle.

 

[skatershawn]

i believe stock 450s at save between 38-42psi but i would just do it the right way!
get some 550's or 650's, you have the SAFC already so you can tune to run properly! and id think about getting a Wideband as well.

you can find them pretty cheap on here!

 

[dsmspickdad]

Read the free mods thread. Do it right the first time it will save you money. How much boost are running and how much do you want to run? What other supporting mods do you have?

 

[Chicken Patty]

i believe stock 450s at save between 38-42psi but i would just do it the right way!
get some 550's or 650's, you have the SAFC already so you can tune to run properly! and id think about getting a Wideband as well.

you can find them pretty cheap on here!

I am getting injectors next, was just wondering in the meantime. I have a wideband already and the car is tuned by me at around 18-19ish psi. A/f ratio is steady 11.8 - 11.9 all across the board.

 

[my98gsx]

if the car is tuned already and your afrs are that good ide leave it. Stay safe, buy some 550s and get a retune.

 

[habitatguy187]

Most guys usually aim for 11.1:1 afr on pump gas, so I'd richen it up a bit.

And you will be fine bumping the base fuel pressure up. Stock 2g fp is 43.5psi, so I'd turn it up to about 48psi and go from there. I really recommend a fuel pump rewire if you're going to be turning it up this high though.